One of several GENES that between them control a single characteristic in an individual. With each polygene exerting a slight e?ect, the genetic outcome is the consequence of ‘group action’. The hereditary characteristics produced in this way are usually those of a quantitative type – for instance, an individual’s height.
n. one of a number of genes that together control a single characteristic in an individual. Each polygene has only a slight effect and the expression of a set of polygenes is the result of their combined interaction. Characteristics controlled by polygenes are usually of a quantitative nature, e.g. height. See also multifactorial. —polygenic adj.
adj. describing a condition that is believed to have resulted from the interaction of genetic factors, usually polygenes, with an environmental factor or factors. Many disorders, e.g. spina bifida and anencephaly, are thought to be multifactorial.... multifactorial
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